| 摘要 |
PURPOSE:To reduce the cost and improve the detection precision by coupling a float arm and a contact arm with each other through an operation transmitting means which magnifies and transmits the swing operation of the float arm to the contact arm. CONSTITUTION:The 2nd detection part 18 consists of a resistance base board 19 arranged at a detector body 11 and a contact arm 20 which slides on a resistance base board 19. This contact arm 20 is coupled with a float arm 13 through an operation transmitting means 22. The operation transmitting means 22 consists of a large gear 23 fixed on the support shaft of the float arm 13 and a small gear 24 fixed on the support shaft 21 of the contact arm 20, and the swing operation of the float arm 13 is magnified at the gear ratio of both gears 23 and 24 and transmitted to the contact arm 20. Consequently, the cost reduction and improvement of detection precision are both attained. |
